Rated 4.90 out of 5 based on 10 customer ratings
(10 customer reviews)

$17.99

12V 5Ah UPS Battery Replaces 4Ah MX-12040, MX12040

SKU: ML5-123231 Category:
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$17.99
$28.99
$39.99
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Delivering power when you need it, the Mighty Max ML5-12 12 Volt 5 AH uses a state of the art, heavy-duty, calcium-alloy grid that provides exceptional performance and service life in both float and cyclic applications.
The ML5-12 is an Absorbent Glass Mat (AGM) technology with a valve regulated design, that can be used in enclosed and indoor environments without leaking or maintenance, providing a superior performance for thousands of models.
Mighty Max SLA batteries are utilized in a wide variety of applications including; Consumer Electronics, Electric Vehicles, Engine Starters, Golf Carts, Hunting, Lawn and Garden Tools, Medical Mobility, Motorcycles, Power sports, Portable Tools, Solar, Toys and Hobby, Access Control Devices, Emergency Lighting, Security and more.
Specifications: 
Voltage: 12 Volt
Amperage: 5 AH
Chemistry: SLA, AGM
Terminal: F1
Battery Dimensions: 
3.58 in x 2.76 in x 4.21 in
Weight: 3.09 Lbs
Warranty 1 Year
Multi Packs Bundled Savings

12 Pack, 1 Pack, 2 Pack, 3 Pack, 4 Pack, 6 Pack, 9 Pack

Volts

12V

Amp Hour

5Ah

Chemistry

SLA / AGM

Quantity

1

Length

3.58

Width

2.76

Height

4.21

Weight

3.09 Lbs

Warranty

1 Year

10 reviews for 12V 5Ah UPS Battery Replaces 4Ah MX-12040, MX12040

  1. Rated 4 out of 5

    E D

    April 2020. Had battery for a little more than one year and it is already time for replacement. The original Union MX-12040 lasted three years (I bought three of them, three years apart, beginning in 2011). Not happy that this one lasted only one year. Buying again because there appears to be no better substitute.Fast delivery, well packaged. Fit exactly in place of original battery. Worked from the beginning with no problems.

  2. Rated 5 out of 5

    Wayne Fetman

    Just what we needed

  3. Rated 5 out of 5

    Barbara D.

    This battery fits just fine for my ADT system. To early to tell how long it will last. Mailing was very fast, packing was great! Happy so far!

  4. Rated 5 out of 5

    Robert Cholewick

    it works

  5. Rated 5 out of 5

    Robert Cholewick

    it works

  6. Rated 5 out of 5

    S. Vassello

    Ordered it – it came promptly – works great !

  7. Rated 5 out of 5

    Web Customer

    perfect replacement

  8. Rated 5 out of 5

    Customer

    perfect replacement

  9. Rated 5 out of 5

    D. Woodall

    Worked perfectly for my ancient Radio Shack House Alarm.

  10. Rated 5 out of 5

    Stev

    very good battery

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Excellent
Mighty Max Battery
Based on 4336 reviews
Battery came in a very secure carton from the manufacturer. I have purchased (3)car batteries from Mighty Max, 2 for my wife’s Grand Cherokee, one main and 1 auxiliary. And the other one for an Equinox, and have had great results with them. I haven’t installed this one in my lawn tractor yet, but have no reason to think it wouldn’t be just as good as the ones I already have!
Great Company to deal with !
Can't speak to the quality or longevity of this new battery because we just bought it, however, the previous one only lasted about 3 years. Got this one on Zoro.com for around $315. Just writing this review for the extra 3 months. Left 3 star rating, one star for each extra month of warranty. Buying reviews seems wild but whatever. Buy at your own risk. I don't endorse or oppose this product. We use it in our semi-electric straddle stacker from uline.
Still in box will update after a few weeks of being installed.
Generator started right up. Battery had strong charge out of the box.
Just got, packed safely and secure, haven’t installed yet
Looks like it will fit my application. Picture of doing a full charge before I put it to use. Using this in my Honda EU3000is inverter generator.
Fit fine ! Battery back up useful again.
An amazing battery for the price! Started my machine right up!
Great and powerful